Byrne, Caroline, John Adrian Naicker Parnell, and Kongkanda Chayamarit. “Systematics of the Thai Calophyllaceae and Hypericaceae with comments on the Kielmeyeroidae (Clusiaceae)”. Thai Forest Bulletin (Botany) 46, no. 2 (December 24, 2018): 162–216. accessed March 14, 2025. https://li01.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/72373.